102011311421 has 4 divisors (see below), whose sum is σ = 102468761472. Its totient is φ = 101553861372.

The previous prime is 102011311393. The next prime is 102011311433. The reversal of 102011311421 is 124113110201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124113110201 = 17207 ⋅7212943.

It is a cyclic number.

It is not a de Polignac number, because 102011311421 - 2⁶ = 102011311357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102011311421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011311121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228724691 + ... + 228725136.

It is an arithmetic number, because the mean of its divisors is an integer number (25617190368).

Almost surely, 2^102011311421 is an apocalyptic number.

It is an amenable number.

102011311421 is a deficient number, since it is larger than the sum of its proper divisors (457450051).

102011311421 is an equidigital number, since it uses as much as digits as its factorization.

102011311421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457450050.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 102011311421 its reverse (124113110201), we get a palindrome (226124421622).

The spelling of 102011311421 in words is "one hundred two billion, eleven million, three hundred eleven thousand, four hundred twenty-one".